Electric incubator.



F. N. L/IGEN.V ELECTRIC INCUBATOR.

APPLICATION FILED FEB. I6 1917- PmntedAug}20,1918.

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WING: ne 11 lF. N. BLAGEN-V. ELECTRIC INCUBATOR.

APPLICATIONVFILED FEB-16, )917.

1,276,317. PatendAug.20,1918.

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venfoz wnaoc y mechanism illustrated in the parts throughout the FRANK.NELSON BLAGEN, OF HOQUIAM, WASI-IINGTON.

ELECTRIC INcUBAToi-t.

Specification of Letters Patent.

Patented Aug. 20,191 8.

Appli-cation filed February 16, 1917. Serial No. 149,006. v

To all whom it may concern:

Be it known that I, FRANK N. BLAGEN, a citiaen of the United States,residing at Hoquiam, in the county of Grays Harbor and the State 0flvashington, have invented a new and useful Electric Incubator, of whichthe following is the specification.

The object of my invention is to provide an electricincubator having animproved combination and arrangement of parts whereby inconvenient andfrequent removal of the mercury or cleaning is not required. It is afurther object of my invention to provide an improved arrangement of theresistance wires.

I attain the object of my invention by the accompanying drawings, inwhich- A 4 Figure l is a longitudinal vertical section through anincubator to which the invention is applied; Fig. 2 is vention, partlyin diagram; and Fig. 3 is a top plan.

Like characters of reference designate like Several views.

Referring to the accompanying drawings, I provide an incubator. casinghaving in its upper portion insulating strips L extending`longitudinally of the incubator at' opposite vide a novel heatingelement consisting of rides and mounted on cross strips M.I'proresistance wire N connected back and forth ,in U-shaped arrangementcontinuously from one end of the incubator to the other, wires beingspaced not more than four inches apart, as illustrated. By this improvedarrangement of the heating element all parts of the egg tray beneath canbe heated within one-tenth of t vide a fuse cut-out O to which wires Qand R are connected -from the service mains. Thence wire R is connecteddirectly tothe heating element Wire Q is connected through the secondarycircuit ofthe electrical relay T to the heating element N.

The lines from the battery or low voltage circuit U connect as follows:One wire connects directly to the. primary terminal Grof thus closingthe battery circuit the relay T and the other wire connectswithillustrated in Fig. 2.,

A Balancelever C has its opposite end arranged the balance lever C, as

mercury cup F, which terminal H, through the C is o eratively connectedby with a suitable to touch the mercury in is fastened to primary relayrelay.4 Lever means of a rod I3 an4 lever A an end view of the in-v esame degree of heat. I pro- A,of the balance lever uis ,cally connect, abattery,

end of the balanced lever with4 the battery, a relay,

thermostat K which is disposed within the incubator chamber. I

The action ofthe mechanism is as follows: When the incubator chamberreaches the which the thermostat is adjusted,

Lever A iii turn pulls with it rod B which is connected with lever Cthrough a knife-edge contact at thumb nut E. As rod B moves downward the`end of lever C moves upward until it no longer touches the mercup F.The primary circuit thus being open, the electrical magnets are releasedand the circuit to the heating element N is opened which allows it tocool olf.

As the inside of the incubator cools down again about one-tenth of adegree, the lever 1. In an electric incubator, the combinationv of anincubating chamber, 4insulating members at opposite sides thereof, aresist-- ance wire connected back and forth on the insulating mem-bers,a thermostat, a balanced lever operatively connected with thethermostat, a cup o mercury with which one end a wire connecting theopposite i awire from the battery to the primary terminal of the relay,and means'for electrically connecting the relay with the service mainsand the resistance wire.

of an incubating chamber, insulating -members' at opposite sidesthereof, a resistance wire connected back and forth in substantiallyU-shaped and evenly ment continuously from lone end of the incubator tothe'other, a thermostat, a balanced lever operatively connected with thethermostat, a cup of mercury with which one end 2. In an electricincubator, the combination.'

spaced arrange-- arranged to electri- 'rie U an electric connect'x Aouvrent u tr lumi of ani L cfmmay motion @om u f3 (fthe/r elmml Qi.

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